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-rw-r--r--Lib/test/test_mailbox.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/test/test_mailbox.py b/Lib/test/test_mailbox.py
index 66472d9..9a43f88 100644
--- a/Lib/test/test_mailbox.py
+++ b/Lib/test/test_mailbox.py
@@ -673,6 +673,9 @@ class TestMaildir(TestMailbox):
self.assertEqual(self._box._lookup(key0), os.path.join('new', key0))
os.remove(os.path.join(self._path, 'new', key0))
self.assertEqual(self._box._toc, {key0: os.path.join('new', key0)})
+ # Be sure that the TOC is read back from disk (see issue #6896
+ # about bad mtime behaviour on some systems).
+ self._box.flush()
self.assertRaises(KeyError, lambda: self._box._lookup(key0))
self.assertEqual(self._box._toc, {})